Rotor, motor and electric tool utilizing the same
US10673295B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 14, 2017 |
| Grant date | Jun 2, 2020 |
| Priority date | — |
| Expiry date | Mar 1, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02K7/145
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A rotor includes a yoke, an end cap, and a rotary shaft. The yoke is fixed relative to the end cap. The rotary shaft extends into the yoke. One end of the rotary shaft is connected to the end cap. The end cap is formed on the yoke and the rotary shaft by injection molding. The present invention further provides a motor and an electric tool including the rotor. In the rotor of this invention, the end cap is formed by injection molding, and the yoke and the rotary shaft are connected into a whole at the same time of forming the end cap. The traditional aluminium end cap is replaced with the molded end cap, which makes the rotor easier to fabricate and have a lighter weight and lower cost.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.